5. Standardized periapical radiograph to assess DIB values. Standardized peri-apical long cone parallel radiographs of the implant (Harris et al. 2002) will be taken. For standardization of radiographs, a film holder will be attached to a custom-made bite splint. This same device will be used during the whole study for radiographic records. From these radiographs, bone resorption will be measured as distance from the implant shoulder to first bone-to-implant contact (DIB). (Figure 6)